#include <cstdio>//uncle-lu
#include <algorithm>
template<class T>void read(T &x)
{
	x=0;int f=0;char ch=getchar();
	while(ch<'0'||ch>'9') { f|=(ch=='-'); ch=getchar(); }
	while(ch<='9'&&ch>='0') { x=(x<<1)+(x<<3)+(ch^48); ch=getchar(); }
	x = f ? -x : x;
	return ;
}

int a, b;

int main()
{
	int T;
	read(T);
	for(int t=1;t<=T;++t)
	{
		read(a);read(b);
		if(a < b)std::swap(a, b);

		int c = a-b;
		c*=2;
	}
}
